Dr. Mary Hayden, a medical anthropologist and Research Professor with the Lyda Hill Institute for Human Resilience at the University of Colorado in Colorado Springs, joins John to explore how human behavior and water insecurity are reshaping the spread of mosquito-borne disease. With fieldwork spanning the U.S. and Latin America, Mary shares how climate change is expanding disease risk into new regions – and why public health strategies must go beyond spraying to include education, trust, and community action.